121001323213 has 4 divisors (see below), whose sum is σ = 121924997568. Its totient is φ = 120077648860.

The previous prime is 121001323211. The next prime is 121001323253. The reversal of 121001323213 is 312323100121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121001323213 - 2¹ = 121001323211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121001323211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 461836981 + ... + 461837242.

It is an arithmetic number, because the mean of its divisors is an integer number (30481249392).

Almost surely, 2^121001323213 is an apocalyptic number.

It is an amenable number.

121001323213 is a deficient number, since it is larger than the sum of its proper divisors (923674355).

121001323213 is an equidigital number, since it uses as much as digits as its factorization.

121001323213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 923674354.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 121001323213 its reverse (312323100121), we get a palindrome (433324423334).

The spelling of 121001323213 in words is "one hundred twenty-one billion, one million, three hundred twenty-three thousand, two hundred thirteen".